Early safety performance of a modified technique of aorta replacement with sinotubular stabilization.

Abstract

We sought to determine if a modified technique for ascending aorta replacement with sinotubular junction reduction and stabilization was safe. This technique was performed by suspension of the three commissures, invagination of the aortic Dacron graft and advancing the graft into the ventricles. We included patients with dilatation of the ascending aorta, normal sinuses of Valsalva dimension (<45 mm), with or without aortic annulus enlargement (>25 mm) and with various degree of aortic insufficiency (from grade 1 to 3). From April to October 2019, 20 patients were recruited from two centers; mean age was 66.9 ± 12.8 years, 13 were male; grade 1, 2 and 3 was present in 12, 2 and 6 patients, respectively. All patients underwent ascending aorta replacement with modified technique; an additional open subvalvular ring was used in 8 patients with aortic insufficiency ≥ 2; cusps repair was performed in 6 patients (5 plicating central stitches/1 shaving); concomitant coronary artery bypass grafting was performed in 10 patients. There was no 30-day mortality. One patient was re-explored for bleeding. All patients completed six-month follow-up; at the transthoracic echocardiography, there was no aortic insufficiency ≥ 1 except one patient with aortic insufficiency grade 1 who underwent ascending aorta replacement and subvalvular ring; no patients underwent reintervention. This modified technique for ascending aorta replacement and sinotubular junction stabilization was safe. It could be associated with other aortic valve sparing techniques. However, such remodeling approach has to be validated in a larger cohort of patients with longer follow-up.